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[23.128.96.36]) by mx.google.com with ESMTPS id e2-20020a170902744200b001c77674ea97si9865245plt.423.2023.10.16.02.35.48 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 16 Oct 2023 02:35:48 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.36 as permitted sender) client-ip=23.128.96.36; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.36 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=QUARANTINE sp=QUARANTINE dis=NONE) header.from=huawei.com Received: from out1.vger.email (depot.vger.email [IPv6:2620:137:e000::3:0]) by pete.vger.email (Postfix) with ESMTP id 2B6138087501; Mon, 16 Oct 2023 02:35:25 -0700 (PDT) X-Virus-Status: Clean X-Virus-Scanned: clamav-milter 0.103.10 at pete.vger.email Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231149AbjJPJfC (ORCPT + 18 others); Mon, 16 Oct 2023 05:35:02 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59704 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229666AbjJPJfA (ORCPT ); Mon, 16 Oct 2023 05:35:00 -0400 Received: from szxga08-in.huawei.com (szxga08-in.huawei.com [45.249.212.255]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 5C09D97; Mon, 16 Oct 2023 02:34:58 -0700 (PDT) Received: from kwepemm000003.china.huawei.com (unknown [172.30.72.56]) by szxga08-in.huawei.com (SkyGuard) with ESMTP id 4S8Bhv13P1z15Npd; Mon, 16 Oct 2023 17:32:15 +0800 (CST) Received: from ubuntu2204.huawei.com (10.67.174.22) by kwepemm000003.china.huawei.com (7.193.23.66) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.31; Mon, 16 Oct 2023 17:34:54 +0800 From: Yang Jihong To: , , , , , , , , , , CC: Subject: [PATCH] perf pmu: Filter out search events table of software pmu in perf_pmu__lookup() Date: Mon, 16 Oct 2023 09:33:09 +0000 Message-ID: <20231016093309.726436-1-yangjihong1@huawei.com> X-Mailer: git-send-email 2.34.1 MIME-Version: 1.0 X-Originating-IP: [10.67.174.22] X-ClientProxiedBy: dggems705-chm.china.huawei.com (10.3.19.182) To kwepemm000003.china.huawei.com (7.193.23.66) X-CFilter-Loop: Reflected X-Spam-Status: No, score=-0.8 required=5.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=unavailable autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on pete.vger.email Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-Greylist: Sender passed SPF test, not delayed by milter-greylist-4.6.4 (pete.vger.email [0.0.0.0]); Mon, 16 Oct 2023 02:35:25 -0700 (PDT) X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1779904229104363751 X-GMAIL-MSGID: 1779904229104363751 For software pmu, the events_table is empty, reducing unnecessary search. Signed-off-by: Yang Jihong --- tools/perf/util/pmu.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/tools/perf/util/pmu.c b/tools/perf/util/pmu.c index 6428e2648289..59c8394a4efa 100644 --- a/tools/perf/util/pmu.c +++ b/tools/perf/util/pmu.c @@ -1033,7 +1033,8 @@ struct perf_pmu *perf_pmu__lookup(struct list_head *pmus, int dirfd, const char pmu->id = pmu_id(name); pmu->max_precise = pmu_max_precise(dirfd, pmu); pmu->alias_name = pmu_find_alias_name(pmu, dirfd); - pmu->events_table = perf_pmu__find_events_table(pmu); + if (!perf_pmu__is_software(pmu)) + pmu->events_table = perf_pmu__find_events_table(pmu); pmu_add_sys_aliases(pmu); list_add_tail(&pmu->list, pmus);